Skip to main content
Home
Department Of Physics text logo
  • Research
    • Our research
    • Our research groups
    • Our research in action
    • Research funding support
    • Summer internships for undergraduates
  • Study
    • Undergraduates
    • Postgraduates
  • Engage
    • For alumni
    • For business
    • For schools
    • For the public
Menu
Atomic and Laser Physics
Credit: Jack Hobhouse

Prof Dieter Jaksch

Professor of Physics

Sub department

  • Atomic and Laser Physics

Research groups

  • Quantum systems engineering
Dieter.Jaksch@physics.ox.ac.uk
  • About
  • Publications

Parameter estimation with cluster states

PHYS REV A 79:2 (2009) 022103

Authors:

M Rosenkranz, D Jaksch

Abstract:

We propose a scheme for parameter estimation with cluster states. We find that phase estimation with cluster states under a many-body Hamiltonian and separable measurements leads to a precision at the Heisenberg limit. As noise models we study the dephasing, depolarizing, and pure damping channels. Decoherence reduces the sensitivity but our scheme remains superior over several reference schemes with states such as maximally entangled states and product states. For small cluster states and fixed evolution times it remains at the Heisenberg limit for approximately 2 times as many qubits than alternative schemes.
More details from the publisher

Maximal violation of tight Bell inequalities for maximal high-dimensional entanglement

PHYSICAL REVIEW A 80:1 (2009) ARTN 010103

Authors:

Seung-Woo Lee, Dieter Jaksch
More details from the publisher

Testing quantum nonlocality by generalized quasiprobability functions

PHYSICAL REVIEW A 80:2 (2009) ARTN 022104

Authors:

Seung-Woo Lee, Hyunseok Jeong, Dieter Jaksch
More details from the publisher

Multimode memories in atomic ensembles.

Phys Rev Lett 101:26 (2008) 260502

Authors:

J Nunn, K Reim, KC Lee, VO Lorenz, BJ Sussman, IA Walmsley, D Jaksch

Abstract:

The ability to store multiple optical modes in a quantum memory allows for increased efficiency of quantum communication and computation. Here we compute the multimode capacity of a variety of quantum memory protocols based on light storage in ensembles of atoms. We find that adding a controlled inhomogeneous broadening improves this capacity significantly.
More details from the publisher
More details

Ultralarge Rydberg dimers in optical lattices

Physical Review A - Atomic, Molecular, and Optical Physics 78:4 (2008)

Authors:

B Vaucher, SJ Thwaite, D Jaksch

Abstract:

We investigate the dynamics of Rydberg electrons excited from the ground state of ultracold atoms trapped in an optical lattice. We first consider a lattice comprising an array of double-well potentials, where each double well is occupied by two ultracold atoms. We demonstrate the existence of molecular states with equilibrium distances of the order of experimentally attainable interwell spacings and binding energies of the order of 103 GHz. We also consider the situation whereby ground-state atoms trapped in an optical lattice are collectively excited to Rydberg levels, such that the charge-density distributions of neighboring atoms overlap. We compute the hopping rate and interaction matrix elements between highly excited electrons separated by distances comparable to typical lattice spacings. Such systems have tunable interaction parameters and a temperature ∼ 104 times smaller than the Fermi temperature, making them potentially attractive for the study and simulation of strongly correlated electronic systems. © 2008 The American Physical Society.
More details from the publisher
More details

Pagination

  • First page First
  • Previous page Prev
  • …
  • Page 30
  • Page 31
  • Page 32
  • Page 33
  • Current page 34
  • Page 35
  • Page 36
  • Page 37
  • Page 38
  • …
  • Next page Next
  • Last page Last

Footer Menu

  • Contact us
  • Giving to the Dept of Physics
  • Work with us
  • Media

User account menu

  • Log in

Follow us

FIND US

Clarendon Laboratory,

Parks Road,

Oxford,

OX1 3PU

CONTACT US

Tel: +44(0)1865272200

University of Oxfrod logo Department Of Physics text logo
IOP Juno Champion logo Athena Swan Silver Award logo

© University of Oxford - Department of Physics

Cookies | Privacy policy | Accessibility statement

Built by: Versantus

  • Home
  • Research
  • Study
  • Engage
  • Our people
  • News & Comment
  • Events
  • Our facilities & services
  • About us
  • Current students
  • Staff intranet